Without a doubt, Uncasville Connecticut. The Mohegan Sun facilities allow the coaches to demonstrate on the court. Not to mention the atmosphere of the facility outside the basketball court!
Had a blast!

I've attended the Nike Basketball Clinic in Las Vegas for years, and have yet to be disappointed. It seems like the line-up is always top notch, it's an on-court demonstration, a ton of vendors, and the facility is great (it's even on the strip)! This is a clinic I definitely recommend.